Separation of ytterbium from 177Lu/Yb mixture by electrolytic reduction and amalgamation

Cieszykowska, Izabela; Żółtowska, Małgorzata; Mielcarski, M.

doi:10.15764/stac.2014.02002

Cited by 9 publications

(1 citation statement)

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“…One motivation for exploring divalent lanthanide chemistry relates to the separation of the f -block elements. − Extractions and chromatographic methods are most often employed to separate and purify f -block elements in their +3 oxidation states, but an alternative means of effecting these separations exploits differences in the +3/+2 reduction potentials. Generally, the latter approach involves treating mixtures of lanthanides with a reducing agent, such as hydrogen or an alkali metal, which causes precipitation of the reduced species.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Divalent Samarium and Thulium N,N-Dimethylaminodiboranates

2021

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The syntheses and molecular structures of new Sm II and Tm II N,N-dimethylaminodiboranate (DMADB) complexes are described. Treating SmI 2 (THF) 2 with Na(H 3 BNMe 2 BH 3 ) in THF results in the formation of Sm(H 3 BNMe 2 BH 3 ) 2 (THF) 3 (1), which can be readily converted to Sm(H 3 BNMe 2 BH 3 ) 2 (DME) 2 (DME = 1,2-dimethoxyethane) or Sm-(H 3 BNMe 2 BH 3 ) 2 (diglyme) by exchange with the corresponding ether. We also show that Sm(H 3 BNMe 2 BH 3 ) 2 (THF) 3 can be prepared by reduction of the Sm III compound Sm(H 3 BNMe 2 BH 3 ) 3 (THF) with KC 8 and that addition of 18-crown-6 to this reaction mixture results in the formation of the Sm II compound Sm(H 3 BNMe 2 BH 3 ) 2 (18-crown-6). In a similar fashion, two new Tm II complexes have been synthesized: treatment of TmI 2 in THF with Na(H 3 BNMe 2 BH 3 ) results in the formation of Tm(H 3 BNMe 2 BH 3 ) 2 (THF) 2 and Tm(H 3 BNMe 2 BH 3 ) 2 (THF) 3 , which form a cocrystal. IR data and elemental analyses are reported for all the new compounds, as are their crystal structures. 1 H and 11 B NMR data are provided where available.

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